(I already posted that on the DHS BBS but I realized there was probably way more persons active here)

Hi,as you probably already know I released a monochrom demo in the Commodore 128 times revisited at the STNICCC 2015 party last week.

This demo is kind of experimental (as far as I know, not many people played with the STe registers in monochrom mode), and as a result the timings are a bit wonky and were tested only on four different machines.

If any of you happens to have a STe (or Mega STe) and a SM124 screen (or a Mono to VGA cable), could you try the demo on your machine and check that the second part is working ok? If it is not, then please try to press/release the left or right arrow keys to see if you can get it to work (probably no more than 4 key presses in any direction) and report the results so we can get some kind of reference values for any future attempt

Can you describe the configuration you used (memory, tos version, from floppy/hdd/ultra satan, if you have a vme card or some fancy cards, ...)Does my previous demo (Save the Earth) ran on this machine?

Finally my Mega comes back to life.Unfortunately there are some glitches in your demo: https://www.youtube.com/watch?v=Nfmm99_sQjAIn additional to STNICCC issue on my SM124 is also visible electron beam issue under the scroll on the left border.

I force the machine to be at 8mhz without cache on startup (and restore the original value on exit), so that's not the problem.Have you tried using the left and right arrows to see if you could fix the problem?

Basically what I'm looking for is a set of values I can use to setup the timings on the start of the machine, so knowing if this megaste requires one or two key presses to the left or the right to get it perfect, would be invaluable

Hellolooking at the demo on the video you made, as well as looking at it under Hatari, the 1st text scroller looks interlaced / hardly readable to me.Even on your video, I can read the 3 other scrolltexts, but this one looks blurry.

Is that because you used some double buffer on this scroll to get a kind of grey by alternating on each VBL ?

On the SM124 it's totally readable despite the speed because the scrolling is smooth as butter, with the mono to vga adapter it's already barely readable, and on the capture it's pointless

I'm not alternating anything on the scrollers, it's just that different frequencies or encoding made it hard to read: It's hard to make a video capture of something that displays at 71.2hz when it's finally compressed into a movie that is then rendered on a 50hz or 60hz screen.